glide question

there are posters here with way more knowledge than me, but here goes:

after you get up to speed, if you take your foot off the gas, the regen kicks in and acts to slow your car. if you place the right amount of pressure on the pedal, you can exactly eliminate the regen while also not adding more power to the wheels (so no battery or ICE power) - the power screen with the pictures of the car, wheels, engines etc has no activity - just a glide.

 

Toyota included some regen with no throttle to simulate driving a conventional car. It would also act to take up any lash in the drive train before you apply the brakes to reduce shock loads.

 

i use the glide a lot, discovered it "accidentally"
I found out taht most of the times, just a small touch of your foot on the petal is enough.

 

This is where the new Hybrid System Indicator comes in very handy. Just get the indicator bar to disappear so you can not see it in the charge range or eco range. This is a bit easier to do if you are in ECO mode.

 

For a hybrid novice like me, I find using the ECO display helps you find glide easily. If you totally lift off the accelerator, you see it charging the battery, but with just a slight bit of pressure, the charging goes away.

 

Are you sure?? Have you measured the amp draw? Until some one comes up with a measurement it's all a guess. And I've noticed different rates of deceleration at different speeds while holding the HSI with no indication.

Wayne

 

I think your point is quite valid, Wayne, but the HSI is the best indicator for glide for most of us, particularly for those without ScanGauge. In that scenario, the energy screen is going to be a bit closer to the truth, but the problem is that it is very difficult to read in the Gen3. Perhaps the best indicator yet is the one developed by Ken1784 (see his thread at ICE running monitor LED). That one will tell you when the ICE is NOT getting fuel.

 

In Japan, we have been discussing how to pulse&glide on the 3G Prius.

Our conclusion is we don't have to be so sensitive for the zero amp (no energy flow) gliding and a weak battery use is acceptable, therefore 0-25% zone on the HSI screen is acceptable.
Also, a slow acceleration is not good for the ICE efficiency, therefore 75-100% zone is recommended for pulsing.

Ken@Japan

 

nice info

so on the gen 3 a slow acc. is not good for eff.
but is that not the oposite of the gen2?
maybe because of the bigger ice?


o and amazing picture.
thats 2,57L/100km and or 91,5 mpg.

 

I believe we've been discussed a briskly acceleration is also recommended on the 2G Prius.

Ken@Japan

 

I consistently use N for my glides. It takes the guess work out of finding the sweet spot.

 

i just took a short drive and focused on the sweet spot, using the eco screen not the picture with the engines and arrows. it was much easier to find than in my 02, and the glide felt almost frictionless. i can't wait to try it at higher speeds.

 

ok because i do it slow and get the best mpg's then. ( GEN 2 )

 

Ken,

Is the P&G being done with ECO mode or normal mode. I too have noticed the Gen 3 loves to use the battery but doesn't seem to have the same penalty with low SOC.

Wayne

 

a ok

so you mean the higher reving when at 40% soc is no longer in the gen3?

 

You seem very knowledgeable. I have a 2010 on order. With my 2006 Prius, I learned by trial and error that the gas motor could be disengaged above at speeds close to 40 mph whenever I would temporarily lift my foot from the accelerator. I could then glide strictly on the electric motor for quite a ways, while my foot was lightly on the accelerator, with little-to-no decrease in speed. Can this be done on the 2010 Prius, as well, or is this handled better by the ECO mode? I've just read other posts that question gliding on a number of points, so I'm a bit confused, but this method has allowed me consistently to get 55-60 mpg in town. Thanks for your help! Rick@Tucson

 

I think there's not so much differences between ECO mode and normal mode, however it is easier with ECO mode to keep the battery consumption as small as possible than normal mode.

I saw the worse behavior causing low SOC on the 3G than the 2G.
During force charging caused by low SOC, we can stop the ICE running by pressing brakes on the 2G, but we can't stop the ICE on the 3G.

Yes, it can be done on the 2010 too.
The light foot control is easier on the ECO mode than the normal mode.

Ken@Japan

 

Finally, I'm beginning to understand. The part about slow acceleration NOT being good for fuel economy is, of course, opposite to what I've been accustomed to with non-hybrid ICE vehicles. That was the part that threw me....:cheer2::cheer2::cheer2: